B0209 - Rear Blower Motor Speed Range/Performance
Repair Importance Level:
Repair Difficulty Level:
B0209 Possible Causes
- Faulty Auxiliary (Rear) Blower Motor
- Auxiliary (Rear) Blower Motor harness is open or shorted
- Auxiliary (Rear) Blower Motor circuit poor electrical connection
- Faulty Auxiliary Blower Motor Control Module
- Faulty Heating, Ventilation, and Air Conditioning (HVAC)
Cost of diagnosing the B0209 code
Labor: 1.0
The cost of diagnosing the B0209 code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.B0209 Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
B0209 Meaning
The Auxiliary Blower Motor Control Module is an interface between the Heating, Ventilation, and Air Conditioning (HVAC) Control Module and the Auxiliary (Rear) Blower Motor. The auxiliary blower motor control module has 5 circuits: a B+ input, ground, a control signal from the HVAC module, a B+ output and a low side Pulse Width Modulation (PWM) control to the Auxiliary (Rear) Blower Motor. The HVAC control module provides a low side (PWM) signal to the auxiliary blower motor control module in order to request the auxiliary blower motor speed. The auxiliary blower motor control module grounds the blower motor using a low side PWM signal in order to vary the auxiliary blower motor speed.
B0209 Information for specific makes
- B0209 BUICK Rear Blower Motor Speed Range/Performance
- B0209 CADILLAC Rear Blower Motor Speed Range/Performance
- B0209 CHEVROLET Rear Blower Motor Speed Range/Performance
- B0209 GMC Rear Blower Motor Speed Range/Performance